Laura A. Meyerson Thomas J. Stohlgren Catherine S. Jarnevich Gregory J. Newman James Graham Alycia W. Crall 2006 <p><span>Non-native species continue to be introduced to the United States from other countries via trade and transportation, creating a growing need for early detection and rapid response to new invaders. It is therefore increasingly important to synthesize existing data on non-native species abundance and distributions. However, no comprehensive analysis of existing data has been undertaken for non-native species, and there have been few efforts to improve collaboration. We therefore conducted a survey to determine what datasets currently exist for non-native species in the US from county, state, multi-state region, national, and global scales. We identified 319 datasets and collected metadata for 79% of these. Through this study, we provide a better understanding of extant non-native species datasets and identify data gaps (ie taxonomic, spatial, and temporal) to help guide future survey, research, and predictive modeling efforts.</span></p> application/pdf 10.1890/1540-9295(2006)4[414:SMTNWD]2.0.CO;2 en The Ecological Society of America Show me the numbers: What data currently exist for non-native species in the USA? article